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dff8da6b | 1 | /* Copyright (C) 2003-2024 Free Software Foundation, Inc. |
c76d1ff5 RM |
2 | This file is part of the GNU C Library. |
3 | ||
4 | The GNU C Library is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU Lesser General Public | |
6 | License as published by the Free Software Foundation; either | |
7 | version 2.1 of the License, or (at your option) any later version. | |
8 | ||
9 | The GNU C Library is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
12 | Lesser General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU Lesser General Public | |
15 | License along with the GNU C Library; if not, see | |
5a82c748 | 16 | <https://www.gnu.org/licenses/>. */ |
c76d1ff5 | 17 | |
714da1d4 FW |
18 | #include <errno.h> |
19 | #include <limits.h> | |
c76d1ff5 | 20 | #include <pthreadP.h> |
714da1d4 FW |
21 | #include <string.h> |
22 | #include <sysdep.h> | |
23 | #include <sys/param.h> | |
24 | #include <sys/types.h> | |
25 | #include <shlib-compat.h> | |
26 | ||
c76d1ff5 RM |
27 | |
28 | int | |
52302bc2 | 29 | __pthread_getaffinity_np (pthread_t th, size_t cpusetsize, cpu_set_t *cpuset) |
c76d1ff5 RM |
30 | { |
31 | const struct pthread *pd = (const struct pthread *) th; | |
32 | ||
714da1d4 FW |
33 | int res = INTERNAL_SYSCALL_CALL (sched_getaffinity, pd->tid, |
34 | MIN (INT_MAX, cpusetsize), cpuset); | |
35 | if (INTERNAL_SYSCALL_ERROR_P (res)) | |
36 | return INTERNAL_SYSCALL_ERRNO (res); | |
37 | ||
38 | /* Clean the rest of the memory the kernel didn't do. */ | |
39 | memset ((char *) cpuset + res, '\0', cpusetsize - res); | |
40 | ||
41 | return 0; | |
42 | } | |
52302bc2 FW |
43 | libc_hidden_def (__pthread_getaffinity_np) |
44 | versioned_symbol (libc, __pthread_getaffinity_np, pthread_getaffinity_np, | |
45 | GLIBC_2_32); | |
46 | ||
47 | #if SHLIB_COMPAT (libc, GLIBC_2_3_4, GLIBC_2_32) | |
48 | strong_alias (__pthread_getaffinity_np, __pthread_getaffinity_alias) | |
49 | compat_symbol (libc, __pthread_getaffinity_alias, pthread_getaffinity_np, | |
50 | GLIBC_2_3_4); | |
51 | #endif | |
714da1d4 | 52 | |
52302bc2 | 53 | #if SHLIB_COMPAT (libc, GLIBC_2_3_3, GLIBC_2_3_4) |
714da1d4 FW |
54 | int |
55 | __pthread_getaffinity_old (pthread_t th, cpu_set_t *cpuset) | |
56 | { | |
57 | /* The old interface by default assumed a 1024 processor bitmap. */ | |
52302bc2 | 58 | return __pthread_getaffinity_np (th, 128, cpuset); |
c76d1ff5 | 59 | } |
52302bc2 | 60 | compat_symbol (libc, __pthread_getaffinity_old, pthread_getaffinity_np, |
714da1d4 FW |
61 | GLIBC_2_3_3); |
62 | #endif |